CN202205311U - Burglar alarm device for household appliances - Google Patents
Burglar alarm device for household appliances Download PDFInfo
- Publication number
- CN202205311U CN202205311U CN2011203296803U CN201120329680U CN202205311U CN 202205311 U CN202205311 U CN 202205311U CN 2011203296803 U CN2011203296803 U CN 2011203296803U CN 201120329680 U CN201120329680 U CN 201120329680U CN 202205311 U CN202205311 U CN 202205311U
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- transistor
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- music clip
- controllable silicon
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 14
- 239000010703 silicon Substances 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Burglar Alarm Systems (AREA)
Abstract
A burglar alarm device for household appliances belongs to the technical field of alarm devices. The burglar alarm device comprises a controllable silicon trigger switch circuit and a simulation siren circuit, wherein, the simulation siren circuit comprises an alarm music chip (IC), a second resistor (R2), a third resistor (R3), a first triode transistor (VT1), a second triode transistor (VT2), and a loudspeaker (BL); and the controllable silicon trigger switch circuit comprises a one-way controllable silicon (SCR), a first resistor (R1), and a microswitch (AN). The burglar alarm device has the characteristics of small size, safety and reliability, low cost, simplicity and convenience in operation, strong imperceptibility, loud sounding, and the like, and can be widely used for any household appliances against theft.
Description
Technical field
The utility model relates to a kind of household electrical appliance burglar alarm, belongs to the warning device technical field.
Background technology
At present, a lot of vehicles all have guard against theft and alarm system, but some household electrical appliance of family, especially valuable household electrical appliance but do not have anti-theft device.Existing a kind of domestic antitheft alarm on the market; Be with physical method or electronic technology, survey the intrusion behavior in the monitored area of deploying troops on garrison duty that occurs in automatically, produce alerting signal; And the regional position of pointing out the operator on duty to report to the police, the system that demonstration possibly take some countermeasures.Alarm host machine is the critical facility of unscheduled events such as prevention robbery, theft.In case the generation accident just can accurately show the site of an accident in security control center through the sound and light alarm signal, makes in taking emergency measures rapidly.The burglar alarm main frame has constituted security system with gateway control system, closed-circuit TV monitoring system, visitor's intercom system and electronic patrol system etc.But this burglar alarm cost is higher, and complex structure receives the interference of external electromagnetic ripple easily.
The utility model content
The utility model provides a kind of household electrical appliance burglar alarm, have the advantages that volume is little, sound is big, be fit to uses such as family, hotel, office.
The utility model adopts following technical scheme for solving its technical matters:
A kind of household electrical appliance burglar alarm; Comprise controllable silicon trigger switch circuit and simulation police whistle sound circuit; Wherein, Simulation police whistle sound circuit comprises warning Music Clip, second resistance, the 3rd resistance, first transistor, second transistor and loudspeaker, and power supply provides electric signal to entire circuit, and the output terminal of warning Music Clip is connected with the base stage of first transistor; The collector of first transistor is connected with an end of the 3rd resistance, the base stage of second transistor respectively; The other end of the 3rd resistance is connected with the input end of warning Music Clip, the emitter of second transistor respectively, and the emitter of second transistor is connected with the positive pole of power supply through switch, and the collector of second transistor is connected with the positive pole of loudspeaker; The negative pole of loudspeaker connects the emitter of first transistor and the negative pole of power supply respectively, and second resistance is connected in parallel on the input/output terminal of warning Music Clip; Controllable silicon trigger switch circuit comprises one-way SCR, first resistance and microswitch; The negative electrode of one-way SCR is connected with the emitter of the negative pole of power supply, first transistor; The trigger end of one-way SCR links to each other with microswitch one end; The microswitch other end links to each other with an end of first resistance, and the other end of first resistance links to each other with the input end of warning Music Clip, and the anode of one-way SCR is connected with another input end of warning Music Clip.
The beneficial effect of the utility model is following:
This household electrical appliance burglar alarm can have characteristics such as volume is little, safe and reliable, cheap, easy and simple to handle, disguised by force, sound is big adaptable across the antitheft of any household electrical appliance.Swarm into or mishap when taking place as the robber, the loudspeaker your writing that thunders immediately, the deterrent effect that sounded the alarm makes the ruffian panic-stricken, has no way of doing it, and can notify the generation of owner's accident, lets the robber fold one's hands for capture.Be fit to uses such as family, hotel, office.
Description of drawings
Fig. 1 is the circuit theory diagrams of this device.
Embodiment
Below in conjunction with accompanying drawing the invention is explained further details.
Like Fig. 1, this device is made up of controllable silicon trigger switch circuit and simulation police whistle sound circuit two parts.Warning device part can be installed in the plastics capsule, is placed on the place that is prone to hear chimes of doom (like duty room etc.).With bifilar fine rule microswitch AN is caused the household electrical appliances place, and microswitch AN is placed in desktop, table top or cabinet for TV face etc. dexterously.This household electrical appliance burglar alarm has the advantages that volume is little, sound is big.Be fit to uses such as family, hotel, office.
Form simulation police whistle sound circuit by warning music chip IC, second resistance R 2, the 3rd resistance R 3, the first transistor VT1, the second transistor VT2 and loudspeaker BL; The music of wherein reporting to the police chip IC can adopt the KD-9561 chip; The first transistor VT1 can adopt 3DG6; The second transistor VT2 can adopt 3AX81, works as switch closure, and power supply provides electric signal to entire circuit; Form controllable silicon trigger switch circuit by unidirectional controllable silicon S CR, first resistance R 1 and microswitch AN, unidirectional controllable silicon S CR can adopt 3CT2K.At ordinary times, microswitch AN receives the compressing of household electrical appliance, and its two normally closed contact is broken off, unidirectional controllable silicon S CR Triggerless and blocking, and alarm is not worked.When household electrical appliance are removed time-out; Microswitch AN two contact auto-closings; The trigger end of unidirectional controllable silicon S CR obtains trigger pip, unidirectional controllable silicon S CR conducting, warning music chip IC energising work through first resistance R 1 from positive source; The police whistle sound electric signal of its output terminal output promotes loudspeaker BL and sends loud and clear chimes of doom through the first transistor VT1, the second transistor VT2 power amplification.At this moment, even household electrical appliance are replaced or destroyed microswitch AN, also can't stop chimes of doom.Have only owner to open to be installed together and other people are difficult to the switch that finds for the moment, could remove warning with alarm.
Claims (1)
1. household electrical appliance burglar alarm; It is characterized in that comprising controllable silicon trigger switch circuit and simulation police whistle sound circuit; Wherein, Simulation police whistle sound circuit comprises warning Music Clip (IC), second resistance (R2), the 3rd resistance (R3), first transistor (VT1), second transistor (VT2) and loudspeaker (BL); Power supply provides electric signal to entire circuit; The output terminal of warning Music Clip (IC) is connected with the base stage of first transistor (VT1); The collector of first transistor (VT1) is connected with an end of the 3rd resistance (R3), the base stage of second transistor (VT2) respectively; The other end of the 3rd resistance (R3) is connected with the input end of warning Music Clip (IC), the emitter of second transistor (VT2) respectively, and the emitter of second transistor (VT2) is connected with the positive pole of power supply through switch, and the collector of second transistor (VT2) is connected with the positive pole of loudspeaker (BL); The negative pole of loudspeaker (BL) connects the emitter of first transistor (VT1) and the negative pole of power supply respectively, and second resistance (R2) is connected in parallel on the input/output terminal of warning Music Clip (IC); Controllable silicon trigger switch circuit comprises one-way SCR (SCR), first resistance (R1) and microswitch (AN); The emitter of the negative electrode of one-way SCR (SCR) and the negative pole of power supply, first transistor (VT1) is connected; The trigger end of one-way SCR (SCR) links to each other with microswitch (AN) end; Microswitch (AN) other end links to each other with an end of first resistance (R1); The other end of first resistance (R1) links to each other with the input end of warning Music Clip (IC), and the anode of one-way SCR (SCR) is connected with another input end of warning Music Clip (IC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203296803U CN202205311U (en) | 2011-09-05 | 2011-09-05 | Burglar alarm device for household appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203296803U CN202205311U (en) | 2011-09-05 | 2011-09-05 | Burglar alarm device for household appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202205311U true CN202205311U (en) | 2012-04-25 |
Family
ID=45969421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203296803U Expired - Fee Related CN202205311U (en) | 2011-09-05 | 2011-09-05 | Burglar alarm device for household appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202205311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426744A (en) * | 2011-09-05 | 2012-04-25 | 陈和娟 | Anti-theft alarm device of household electrical appliance |
-
2011
- 2011-09-05 CN CN2011203296803U patent/CN202205311U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426744A (en) * | 2011-09-05 | 2012-04-25 | 陈和娟 | Anti-theft alarm device of household electrical appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20120905 |